• The Journal of Korean Institute of Communications and Information Sciences
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• v.29 no.12C
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• pp.1686-1691
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• 2004

In this paper, we present an improved method to calculate Euclidean distance transform based on Guan's method. Compared to the conventional method, Euclidean distance can be computed faster using Guan's method when the number of feature pixels is small; however, overall computational cost increases proportional to the number of feature pixels in an image. To overcome this problem, we divide feature pixels into two groups: boundary feature pixels (BFPs) and non-boundary feature pixels (NFPs). Here BFPs are defined as those in the 4-neighborhood of foreground pixels. Then, only BFPs are used to calculate the Voronoi diagram resulting in a Euclidean distance map. Experimental results indicate that the proposed method takes 40 Percent less computing time on average than Guan's method. To prove the performance of the proposed method, the computing time of Euclidean distance map by proposed method is compared with the computing time of Guan's method in 16 images that are binary and the size of 512${\times}$512.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.8
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• pp.3458-3465
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• 2011

Business relationships can be divided into vertical and horizontal relationships. Relationship between horizontal competitors in the business of business to be done is generally vertical relationship between the main office Suppliers and Contractors says business done. In general, the number of models of business relationships through a lot of things are known. Model consisting of a vertical relationship, but there are not many highlights. In this paper, the vertical relationship problems based on the business model to develop. Vertical relationships include leading industrial electronics, automotive and many industrial tempted to target the automotive industry, but in this paper developed a model to look at. In Chapter 2 the theoretical background needed to develop a process model to examine the vertical relationship between Chapter 3 Features Find out about your business. Followed by Chapter 4 of this paper, the vertical relationship between the core business process model is developed. Finally, Chapter 5 of the study limitations and future research directions are suggested.

• 한국벤처창업학회:학술대회논문집
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• 2007.04a
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• pp.313-328
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• 2007

In this paper we investigated the organization of regional business incubation center itself and that of companies m center and scrutinized the problems and obstacles to take self-supporting administration for both of center and companies in it. We classified the companies operating inside the center into four types according to the formation of organizations analyzed them, and proposed some solutions to enhance their operating abilities to obtain elf-supporting administration.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.2 no.1
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• pp.1-14
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• 2007

In this paper we investigated the organization of regional business incubation center itself and that of companies in center and scrutinized the problems and obstacles to take self-supporting administration for both of center and companies in it. We classified the companies operating inside the center into four types according to the formation of organizations analyzed them, and proposed some solutions to enhance their operating abilities to obtain elf- supporting administration.

• Journal of the Korean Society of Propulsion Engineers
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• v.25 no.5
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• pp.18-26
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• 2021

In this work, we have developed a 1D network model aimed at predicting eigenvalues for resonance frequency analysis in a lab-scale industrial gas turbine single nozzle combustion system. Modern industrial gas turbines generally adopt combustors with very complex geometry and flow path to meet various design requirements simultaneously. The current study has developed a network model for combustion systems with backflow at the same axial location. The modeling results of resonance frequencies and mode distributions for a given system using the network model were validated from comparisons with prediction results using a 3D Helmholtz solver.

• Proceedings of the KAIS Fall Conference
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• 2010.11b
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• pp.832-834
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• 2010

본 논문에서는 권선형 엘리베이터 시스템의 종방향의 운동을 표현할 수 있는 운동방정식을 도출한다. 기존의 권선형 엘리베이터 시스템의 종진동을 억제하기 위하여 MR유체를 특징으로 하는 댐퍼를 적용하고, MR댐퍼가 적용된 시스템의 운동방정식을 도출한다. 부하하는 자기장에 따른 엘리베이터 시스템의 종진동 저감의 변화를 관찰하였다.

• Electronics and Telecommunications Trends
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• v.31 no.4
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• pp.23-35
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• 2016

최근 ICT 기술의 발전과 콘텐츠 제작 환경의 변화로 가상현실 기술이 급속히 확산되고 있다. 특히 ICT와 하드웨어의 성능 발전으로 현실과 구분되지 않는 콘텐츠 구현이 가능해져 게임과 테마파크 등 엔터테인먼트 분야는 물론, 교육 훈련, 가상치료, 제조, 국방 등 다양한 사업과 융합되어 신사업과 신시장을 창출할 수 있는 미래지향적 산업으로 발전하고 있다. 본고에서는 가상현실 기술의 개념과 특징에 대해 설명하고, 가상현실 기술동향, 가상현실 산업동향에 대해 설명하고, 향후 가상현실의 발전방향에 대해 기술하고자 한다.

• 전기의세계
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• v.20 no.5
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• pp.40-42
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• 1971

XY recorder는 10여년전부터 널리사용되어 오는 기록계로 2개의 자동평형전위차계로 X, Y축방향에 arm과 pen의 결합으로 양자의 좌표축의 교점에서 pen이 평형정지하는 상태에 기록지자체가 servo motor로 이동되어 기록이 가능하게 된다. 특히 타기록계에 비하여 고감도(Ex. 0.5V/cm), 고정도(Ex. 0.3%)임은 물론 y=f(x)인 x,y의 함수관계가 기록되어 타기록계에서는 얻기 어려운 특징이 있어, analog computer의 해의 기록계로서, 도한 각종 검출변환기를 전설치하여 vacuum tube 혹은 diode transistor의 특성곡선, 전기철판등의 자성재료의 자화곡선, 회전기의 회전수-전압, 전류, 출력, 효율곡선, 금속재료의 온도 혹은 인신장곡선, pipe valve의 유량-압력곡선등 전기.전지.기계.재료.물리.화학등의 다각도용도로서 연구실험은 물론 생산현장에 있어서의 시험. 정리. 감시등의 치용이 활발히 급진하는 경향에 비추어 이 기록계 사용에 고려되어야할 noise제거의 한 방법을 소개하고저 한다.

• Proceedings of the Optical Society of Korea Conference
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• 2000.08a
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• pp.212-213
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• 2000

레이저로 발생시킨 플라즈마의 시간적, 공간적인 분광학적인 특성을 조사하였다. 진공분위기(약1x$10^1$에서 1x$10^{-5}$ Torr) 및 Argon분위기(약 1x$10^{0}$에서 1x$10^{-3}$ Torr)에서 INVAR 시편에 대해 detector의 gate 지연시간을 조정하여 시간적인 플라즈마의 분광선 세기를 측정하였다. 또한 레이저광의 조사방향과 수직되게 놓여 있는 시편에 대해 그림 1과 같이 시편 표면 위로부터 약 0, 2, 4, 6 mm 떨어진 위치에서 플라즈마의 분광선 세기를 관찰하였다. (중략)

• The Journal of the Petrological Society of Korea
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• v.23 no.2
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• pp.75-103
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• 2014

The Quaternary faults are extensively observed along major inherited fault zones (i.e. Yangsan Fault System, Ulsan Fault, Yeonil Tectonic Line, Ocheon Fault System) in SE Korea. Their geometry and kinematics provide a very useful piece of information about the Quaternary crustal deformation and stress field in and around Korean Peninsula. Using magnetic fabrics (AMS), we attempted to determine the slip senses of Jinti, Mohwa, Suseongji2, and Wangsan faults and then interpreted the fabric development process of fault gouge and the characteristics of stress field during the Quaternary. All the magnetic fabrics of the faults, except the Wangsan Fault, consistently indicate a dominant reverse-slip sense with weak strike-slip component. Most of the oblate fabrics are nearly parallel to the fault surface and the anisotropy degrees generally increase in proportion to the oblatenesses. These results suggest that the fabrics of the fault gouges resulted from a progressive deformation due to continuous simple shear during the last reactivation stage as reverse faulting. It is also interpreted that the pre-existing fabrics were overwhelmed and obliterated by the re-activated faulting. Paleostress field calculated from the fault slip data indicates an ENE-WNW compressive stress, which is in accord with those determined from previous fault tectonic analysis, focal mechanism solution, and hydraulic fracturing test in and around Korean Peninsula.